Clutch.



PATENTED NOVQ29, 1904. c. E

APPLIUA G K YSER. CLUTCH. TION FILED APB.18, 1904.

actdescription of the invention,

UNITED STATES.

- Patented November '29, 190a I PATE T OFFIcE.

CLUTCH.

SPECIFICATION forming part of Letters Patent No. 776,404, dated November29, 1904.

Application filed April 18,1904. Serial No. 208,669.

To all whom it: may concern: I

Be it known that I, CHARLES C. citizen of the United States,

Knrsnn, a residing at N ewport News, in the county of Warwick and Stateof Virginia, have invented certain new and useful Improvements inClutches; and I do de clare the following to be a full, clear, andexsuch as will enable others skilled in the art to whichitappertains tomake and use the same.

My invention is an improved clutch; and it consists in the construc ion,combination, and arrangement of devices hereinafter described andclaimed.

. clutch in which there is a driven member and of th anindependently-revoluble driving member having positive interlockingdevices in which there is also a primary member for frictionallyengaging the driven member yieldingly, so as to obviate the jar and jerkupon the members when the same are clutched. V

In the accompanying drawings, Figure 1' is a longitudinal sectional viewof a clutch embodying my improvements. Fig. 2 is a transverse sectionalview ofthe same, taken on the I plane indicated by the line a a ofFig. 1. Fig. 3 is a similar view taken on the plane indicated by theline b 6 of Fig. 1. Fig. 4 is a detail elevation of the driven element,showing the alternate teeth 3 4 in dotted lines.

In the embodiment of my invention here shown the driven member 1, whichis revolubly mounted on a shaft 2, is a gear-'wheel. It may be a pulley,a friction-wheel, or of any other suitable construction, and I do notlimit myself in this particular. On one side e driven member, near itscenter, are clutchteeth 3, which are equidistant apart, the alternateteeth being shorterthan the others, as at 4.

- On the shaft 2 is shown a driving member 5, which is feathered orsplined thereto, as at move longitudinally thereon.

6, so that the driving member is necessarily revolved with the shaft,but is adapted to The driving member is provided at one end withclutchteeth 7, which are similar to the clutch-teeth 3 of the drivenmember and are adapted to engage the same, the alternate clutch-teeth 7on ain.)

I than the others, as at 8. The

.outer end with an annularly-grooved head 9,

in which is a shifting collar 10, the latter being pivotally connected,as at 11, to the arms 12 of a shifting-lever 13, which may be used tomove the driving member into and out of engagement with the drivenmember.

A primary member 14 is here shown as carried by the driving member' andsplinedor feathered thereto, as at 15g so that the primary member isrevoluble with the driving member and is movable longitudinally thereon.primary member and the driven member are provided at their opposingsideswith coengaging frictional faces 16, which may be either of the formhere shown or of any other suitable form. Springs 17 are employed tomove the primary member into yieldable frictional contact with thedriveri member, so as to frictionally connect the latter to the drivingmember and cause both of the said members to rotate and at the same rateof speed prior to the engagement of the teeth of the driving member withthose of the driven member, and hence prevent the jerk, jar, and stresswhich would otherwise result upon a sudden engagement of thepositivelylocking clutchteeth of the driven and driving members. hereshown as bearing between the head 9 of the driving member and theprimary member and with their ends disposed in sockets 18 in the primarymember. Within the scope of my invention any suitable number of thesprings may be employed, thesprings may be of any suitable construction,and they may be supported by any suitable means and caused to press theprimary member so as to engage Springs 17 are the same with the drivenmember frictionally ally locked together by the primary member prior tothe engagement of the positively-locking teeth of the driven and drivingmembers, as heretofore stated. The position of the muwally-engagingalternately-shortened teeth of the driving and driven membersfacilitates their coengagement when the said members are moved towardeach other, as will be under-.

stood. I

From the foregoing description, taken in connection with theaccompanying drawings, the construction and operation of the inventionwill be readily understood Without requiring a more extendedexplanation.

Various changes in the form, proportion, and the minor details ofconstruction maybe resorted to without departing from the principle orsacrificing any of the advantages of this invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters latent, is

In a clutch, the combination of a shaft, a driven element revolublethereon and having a frusto-conioal recess in one side forming afriction-surface, a driving element revoluble with and longitudinallymovable on the shaft,

said driven and driving elements having coacting clutch-teeth on theiropposing sides, a

member carried by the driven memconnected thereto for rotationthereprimary ber and with and longitudinal movement thereon andmarymember beyond the clutch-toothed end of the driving member, and means tomove the latter, and hence also the primary member, longitudinally onthe shaft.

In testimony whereof I have hereunto set my hand in presence of twosubscribing-witnesses. CHARLES C. KEYSER.

Witnesses:

T. O. Pncrrnnson, E. A, Lrnnennn.

